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October 2006 in “International Journal of Dermatology” Excessive blow-drying can cause "bubble hair," leading to hair loss and fragility, but improves when heat use is reduced.
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March 2010 in “European journal of dermatology/EJD. European journal of dermatology” A young Caucasian girl had both woolly hair and alopecia areata, which is rare.
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January 2007 in “Epilepsia” Valproic acid can cause reversible hair curling and persistent hair thinning.
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January 2002 in “PubMed” The new test shows how hair treatments affect hair's bending stiffness by swinging a pendulum through hair fibers.
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January 2013 in “PubMed” Permanent wave treatment with thioglycolic acid changes hair structure by altering disulfide bonds.
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June 2023 in “Journal of applied crystallography” The technique showed that human hair has two main parts, with 68% being rigid and the rest flexible, and water swelling affects its structure.
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January 2013 in “Indian dermatology online journal” The document reports a unique case of woolly hair with a combination of conditions not previously seen together.
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February 2016 in “American Journal of Dermatopathology” The boy with woolly hair nevus had thinner hair and abnormal hair follicles, which improved with treatment but worsened when treatment stopped.
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February 2019 in “Skin research and technology” White hair has less lipid content and absorbs water differently than brown hair.
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January 2017 Hair movement can indicate hair quality and health.
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June 2003 in “Journal of the American Academy of Dermatology” Human hair, despite its different types, shares common traits that affect its structure and response to treatments.
Hair movement can indicate hair quality and health.
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February 2024 in “Journal of Dermatological Science” Curved hair can develop when hair cells merge abnormally during growth.